HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 530

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20 Electrical Characteristics
Rev. 7.00 Jan 31, 2006 page 504 of 658
REJ09B0272-0700
Notes: 1. For t
WRH, WRL,
WRH, WRL,
AD15–AD0
AD15–AD0
WR(Read)
WR(Write)
DPH, DPL
DPH, DPL
RD(Write)
RD(Read)
A21–A0
DACK0
DACK1
DACK0
DACK1
(Read)
(Read)
2. For t
3. For t
4. t
(Write)
(Write)
(Write)
RAS
CAS
of t
CK
RDH
cyc
Figure 20.24 DRAM Bus Cycle (Short-Pitch, Normal Mode)
CAC1
ACC1
RAC1
is measured from A21–A0, RAS, or CAS, whichever is negated first.
– t
AD
, use t
, use t
, use t
– t
ASC
cyc
cyc
cyc
T
– t
– 44 instead of t
p
1.5 – 35 instead of t
0.65 – 35 (for 35% duty) or t
RDS
.
t
AD
t
RASD1
T
cyc
r
t
– t
WPDD2
Row
t
WSD3
t
cyc
AD
RAH
– t
t
ACC1
t
t
t
t
1.5 – t
t
RDD
DACD4
AD
WDD2
RDS
RAC1
cyc
*2
t
.
WCS
*3
RASD1
T
t
Column
CAC1
c
t
t
t
0.5 – 35 (for 50% duty) instead
ASC
DACD1
DACD5
t
DS
*1
– t
t
WCH
RDS
t
RDS
t
t
t
t
t
t
DACD2
WPDH
RASD2
CASD1
WDH
RSD
.
t
WSD4
t
RDH
*4